Guessing Correlations
- a neat "game" to show the relationship between correlations and scatterplots
Click on the "Correlation" box to play. Part of the CUWU Statistical Program
at Illinois-Champaign-Urbana. See how many you can match without missing.
If the link doesn't work, try a local
version on the T:drive.

Drawing
a Regression Line by "Eye" Click the "Begin" box to bring up a scatterplot.
Use your mouse to draw a line on the scatterplot. The MSE error is computed
(i.e. "average" squared error). Check the minimum MSE and see how close
you can get. Click the box to see the least squares line. You
can also guess and check the correlation. This applet is part of the
Rice Virtual Lab in Statistics. (Note: Netscape 4.06 or better is required
for Java 1.1)

Influence
in Regression - see the effects of adding an outlier to a least squares
line. (Webster West - S. Carolina).

Normal
Approximation to Count data - see how the distribution of counts(binomial)
in a sample relate to the sample size (n) and proportion (p). Note:
The sample proportion is just count/n so this helps see how well the normal
curve fits the sampling distribution of a sample proportion. Try it
for n=12 and p=0.1, 0.2, 0.4, 0.5, 0.6, 0.8, and 0.9. (Rice Virtual Lab in
Statistics)